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Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

The correct curve between the stopping potential (V) and intensity of incident light (I) is
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(a)
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(b)
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(c)
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(d)
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A diminished virtual image can be formed only in
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(a) Plane mirror |
(b) A concave mirror |
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(c) A convex mirror |
(d) Concave-parabolic mirror |
For reading small letters with a lens:
A 20 cm length of a certain solution causes right-handed rotation of 38°. A 30cm length of another solution causes left-handed rotation of 24°. The optical rotation caused by 30cm length of a mixture of the above solutions in the volume ratio 1 : 2 is
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(a) Left handed rotation of 14° |
(b) Right handed rotation of 14° |
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(c) Left handed rotation of 3° |
(d) Right handed rotation of 3° |
The relation among u, v and f for a mirror is:
Assertion : Radio waves can be polarised.
Reason : Sound waves in air are longitudinal in nature.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |